UGRec: Modeling Directed and Undirected Relations for Recommendation
UGRec: Modeling Directed and Undirected Relations for Recommendation
The recommender systems, which merely leverage user-item interactions for user preference prediction (such as the collaborative filtering-based ones), often face dramatic performance degradation when the interactions of users or items are insufficient. In recent years, various types of side information have been explored to alleviate this problem. Among them, knowledge …